Setting the Caseih

[Hamloc]

We have gained a bit of knowledge since I posted this thread. We found that the majority of straight cut canola is going out the back as rotor loss. We use these settings now, 850 rotor, tighten up the concaves like 4, fan 720, pre sieve closed, top 10mm bottom 9mm. Spreader at 550. The concave arrangement is very important, you need a wide wire in the first spot then a hard thresh in the 2nd on each side. That arrangement will let the canola out of the cage early and and pods left should get smashed up in the 2 spot. Hopefully this works better for you.

I have a set of slotted mad concaves for peas that I was thinking of putting in the first position. Never would have thought of hard thresh in the second.

[biglentil]

Sorry I wrote that wrong, I didn’t mean unthrashed pods, was simply referring to trash in the sample. It is possible I worry too much about trash. Much harder to keep trash out of the sample with pod shatter canola.

Had that issue with one machine other day massive trash in the sample, mine was fine. Only difference preseive in that one was 3 instead of 2 in mine. I opened it wide open a couple times to get the sticks out. Moved it to two, cranked the fan up to 1050 while sitting stationary, to make sure fan plenum was clear. Put wind back down to 830 and sample was a 100 times better. Hope this helps.

[BreadWinner]

You can’t have the presieve open wider than the size of the seed you are combining.

[biglentil]

You can’t have the presieve open wider than the size of the seed you are combining.

I hear ya, I like to have it as open as I can as long as fan doesn't plug. Increases overall cleaning capacity. Those running sub 700 fan may require it closed completely in canola. Properly setting a combine is more art than one size fits all hard fast rules.

[blackpowder]

Am told pre sieve only designed to take the first %10 of grain.
We did some kill stalls in wheat this year to check even loading of shoe. Very important. Rotor concave setup affect that.
Conditions varied through the day but loss always followed engine load. 80% was the magic number even in the 9240.
Am told to start at the front of the machine when making adjustments. Makes sense. Kill stall enlightening.
Different varieties of pod shatter vary a lot I'm told. Invigor more like a wht/bly setting.
Choking bottom sieve chokes airflow.
Tightening concaves usually augers it out faster.

[biglentil]

Am told pre sieve only designed to take the first %10 of grain.
We did some kill stalls in wheat this year to check even loading of shoe. Very important. Rotor concave setup affect that.
Conditions varied through the day but loss always followed engine load. 80% was the magic number even in the 9240.
Am told to start at the front of the machine when making adjustments. Makes sense. Kill stall enlightening.
Different varieties of pod shatter vary a lot I'm told. Invigor more like a wht/bly setting.
Choking bottom sieve chokes airflow.
Tightening concaves usually augers it out faster.

All good advice but I dont miss the factory top seive one bit. With the airfoil sample is great in all crops, and hardly throw anything out it allows more wind, more wind = higher cleaning capacity. One of the biggest problem of the factory seives is if they get a bit damaged or one side or area is opening more than others. That's were the wind goes and causes unequal wind loading. That causes blow out and forces one to run less wind. Fixed airfoil chaffer is perfectly symmetrical and increases cleaning ability by 25 to 30%. Used to be constantly hunting with the seives over the radios, changing settings. Now the only thing ever discussed is wind and rotor speed a couple times a day. Set the wind so the sample is slightly dirty and roll.

[Maver]

We have a Bushel plus drop pan. I recommend it. It saved me $25000 in the barley this year alone! Barley has been tough to keep in the combine this year for all colors in our area. Canola has been easy to keep. Throwing over about 0.1 bu/ ac. We run NH combines so I can't help you much with Case settings. Everyone should use a drop pan of some sort.

[biglentil]

We have a Bushel plus drop pan. I recommend it. It saved me $25000 in the barley this year alone! Barley has been tough to keep in the combine this year for all colors in our area. Canola has been easy to keep. Throwing over about 0.1 bu/ ac. We run NH combines so I can't help you much with Case settings. Everyone should use a drop pan of some sort.

I built my own electromagnetic drop pan at one time, had a schur too, now I use a deep dish hard rubber floor mat when grain carting. I chuck it like a frisbee under the combine. Combine operators dont need to stop and waste time resetting pans. I use round hand seives to clean the sample. Weigh the sample on a small portable scale. There is combine loss website ive used to enter the data.

Even easier I keep a cordless leaf blower in the grain cart. I'll check behind the combines occasionally by blowing the chaff away on the ground the width of the cut and inspecting. In canola other day I couldn't find more than a single bb or two per square foot.

Also if you have top seive out give it a light coat of red spray paint after a few days you'll have a good idea how your shoe is being loaded with material. Then adjust concave pinch point with the hangers according.

[6V53]

Static electricity. Saw a combine with cables connected to the pivot points on the seives and a chain dragging off the back axle. The guy said it was for combineing canola. And that was before they started making combines out of Tupperware.

[Hamloc]

A quick update we got back in the field yesterday for a few hours.

I put Mad concaves slotted concaves in the first module, this worked much better than the Sunnybrook max thrash I had there before. Ended up with my rotor speed at 700, clearance at 24, pre sieve at 2 which gave me roughly a 3/32 opening. Top sieve 16, bottom sieve 12, fan at 650 and straw spreader at 580. I tried lower speeds on the spreader but the straw was a bit tough and I was concerned it might plug. I am quite happy with the losses now. Thanks for the responses.